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Heat pump furnace with control board 624663-0 automatically switches to emergency heat and doesnt shut off and heat continues to climb

In tappan furnace model b5bm-t25k-b only works on emergency heat and doesnt shut off while heat continues to climb

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 25 Answers

SOURCE: ruud achiever 90 plus blower not working

does the furnace ignite?? your system may not have been lighting and has gone into ignition lockout count the codes of the led lights then remove panel led diagnostic codes are listed there.
if led codes indicate no problem verify capacitor is good and that mtr is getting 115 volts.

Posted on Nov 22, 2008

vanni7
  • 163 Answers

SOURCE: 3 amp fuse blows on a carrier 58mcb furnace board

Hi!!! Does your ac unit work fine?If not check your low voltage problem..You have a low voltage problem check the wire going out to your condensor make sure that they are not touching..Good luck..Check low voltage wires..short in progress..

Posted on Jan 04, 2009

  • 1 Answer

SOURCE: Amana Heat Pump Emergency Heat will not come on

On the heating element [behind the coil, (the springy thing)], at the top end of the element, there is a little thermistor I think it is called. You will have to remove the fan shroud. With the power off, check for continuity if you have a multimeter. If that is the problem (no continuity), you can pick one up at al local heating supply. Just have it soldered back in and reconnect. If the thermistor 's continuity is okay, remove the main board under the control knobs. I have seen these boards burn in the back where the relays are soldered on. If you're really good with a solder you can try to re-solder it. If not, it's about as cheap to buy a new unit as it is to buy the board. Good luck.

Posted on Feb 17, 2009

cactus bob
  • 267 Answers

SOURCE: Am having a Tappan Split system heat pump

i dont think so that variable speed air handler is a nightmare when(not if) that motor goes bad its 700.00 to 900.00 the regular 3 speed one your getting 125.00 and it will last 10 to 15 years ....... if you realy want fun install a 17 seer system ,you will have your repair guy on speed dial

Posted on Mar 01, 2009

tbirdfan1
  • 3051 Answers

SOURCE: 1994 trane furnace fan will not shut off xl 1200

Hello there:
please contact a certified trane dealer i think that you are having a thermostat problem they may be able to assist you on setting the thermostat the correct way . ok?
best regards
mike

Posted on Aug 16, 2009

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1 Answer

My furnace wont turn off


Well Linda, is it the heat portion will not shut off or just the fan in the furnace that continues to run?? If the heat won't shut off, it will get uncomfortably HOT in your house, if its just the fan.....well, its just the fan.

More than likely its just the fan and it is running continually due to a stuck set of contacts in the control board or in the fan control board, if so equipped. If it is a furnace that is older than 15 to 20 years, it could be a mechanical relay that controls the fan directly off another control in the furnace vestibule that senses heat in the heat exchanger. If its an electric furnace, the first stage heat sequencer could be stuck closed causing continual fan operation and possibly one heat element is also energized. There are also several additional issues that could be the cause.

At any rate, its time to contact a reputable service entity to correct your problem. Good luck, Linda.

Dec 04, 2015 | Heating & Cooling

1 Answer

Where to look from here?


It sound like the limit switch is shutting off and not coming back in to play .

Mar 14, 2017 | Heating & Cooling

2 Answers

RC 92+ Upflow Condensing Tappan Furance: we have sewer smell in basement that is strongest in furnace room. No floor drain. We have a pvc pipe with condensation hose from furnace in it. The trap continues...


the switch is a service or emergency switch if the condensation hose / line is not a sealed connection and the trap is empty the sewer smell will be constant either make it a sealed connection or close off the trap and reroute the condensation line --during heat season not condensation so heat will cause water in to evaporate

May 17, 2017 | Heating & Cooling

2 Answers

Tappan furnace blower will not shut off and furnace does not heat and red light is blinking one flash constantly.


Usually when the furnace blower motor runs all the time
The limit switch or rollout switch is usually open or bad.
The furnace board is seeing that one of those switches is open, so it brings the blower on to try to get the heat out of the combustion chamber area, so the switch will close. But if the switch is bad and won’t close, the furnace board will keep the blower running continuously.

Mar 12, 2010 | Heating & Cooling

2 Answers

The furnace wont turn on even though it says it is


not all digital thermostats are compatible with the manufacturers circuit control boards in the furnace. Hunter has had this problem several years ago. Other than that you may have miss wired the unit. usually the furnace is used as backup heat (during defrost) or emergency heat if your heat pump konks out. Are you switching to emergency heat for a furnace call?

Nov 24, 2009 | Hunter Fan Company 5/1/1 Programmable...

1 Answer

Emergency heat comes on with air conditioning


your problem is in the low voltage control circuit. disconnect the wire at the furnace that operates the emergency heat. Then see if its in the thermostat or the wiring or the board in the furnace

Aug 12, 2009 | Icm 303 Heat Pump Defrost Timer

1 Answer

3 amp fuse blows after three hours on Goodman 4 ton 16 seer pump


I would suspect you have a problem in the defrost circuit of your heat pump. there are a couple of things you can try. first just run the system on emergency heat and see what happens. you could have a defrost board that is shorting when it kicks into defrost. it sends a signal back to the furnace so it will come on during defrost. if you do not blow a fuse as long as you are running in emergency heat, i would suspect the defrost control board. also you could have a dead short in the wire that runs from the "w" terminal on furnace control board, out to the heat pump. keep in mind that any of the wires could be the cause and i am just tying to give you the most common things. your furnace will still run if you unhook all the low voltage wiring out at the heat pump. if you do this and stop blowing fuses. you know it is something on that wiring. goodl luck.

Jan 26, 2009 | Haier Energy Star ESA3183 Air Conditioner

1 Answer

Electric furnace/heater pump/fan unit won't shut off


There are dip switches on the main board.. When you remove the lower panel on the air handler there are instructions to where the dip switches should be for your units fan control. if the switches are in the correct configuration.. The Thermostat may be malfunctioning or not wired properly. and last.. and most expensive.. the motherboard may also be failing.

Jan 09, 2009 | Heating & Cooling

1 Answer

TAPPAN gas range model 30-3991-00/03 oven won't work.


the button your holding is the switch that tells the board that the consumer whats to bake.so if holding the switch causes that message to work[or oven to heat] and letting go of that button ,then no work .its that button ,but its all part of the board .just that part of its funktion is broken.,if it was lets say your oven ignitor or oven gas safty valve ,the board/oven control[the one with the button]would continue to try after you have selected bake [pushed button]or would give error code.hope that helps you. God bless you , tom

Jan 05, 2009 | Tappan Kitchen Ranges

1 Answer

Carrier 58MVP; Blower on, no heat. Themosta at 75, temp at 69 and furnace still does not come on. Fault code 12


A code 12 is "Blower on after power-up" Try resetting the furnace with either the Emergency switch or circuit breaker. If it continues, you may need a new control board.

Nov 28, 2008 | Carrier Heating & Cooling

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